Basics of a Transformer
The transformer is an instrument used to covert an AC at a certain voltage
to an AC at a different voltage without change of frequency. This consists of a closed laminated iron
Basics of meter & Measurements
Moving coil galvanometer (MCG)The moving coil galvanometer was first invented by lord kelvin and later modified by D’arsonval. The MCG is used for measurement and detection of current and electric cha...
Clasp Right hand Rule
Right hand RuleIf a
conductor carrying current is held in the right hand, such that the thumb point
in the direction of the current then the direction of bend of the rest of the
Control-TransformersWhat is control transformer?A control transformer also known as an industrial control transformer, or a control power transformer, or even a machine tool transformer is essentially...
Design Fundamentals of Transformers
first stepFind core area of transformerCore Area = (1.152 *
Sqr(VA) * 100) * 0.95 The
second stepFind approx. core
match the core areaThird
stepFind turns per voltTPV = (1 / (4.44...
Electrical Voltage, Current & Power
What is Electrical Voltage?Voltage is also called potential (Potential is defined as the work required from some energy source in moving a unit positive charge between two points in an electric field)...
current is basically two types, Alternating Current denoted as AC and Direct
current DC. One of the main parameter of AC is the frequencies. The variation of current or vol...
IC 555 Timer Circuits and applications
IC 555 BasicsIC 555 is one of the most commonly used timer circuit IC, hart of many hobby circuit and it have a widespread application in electronic gadgets and circuits. Here we note ...
IP RatingsIP rating is a system
that classifying electrical equipment’s degree of protection from solid ojects
and liquids. This is a recognized system in most of European and British
NEMA Equivalent IP Rating
NEMA Equivalent IP Rating NEMA Rating &...
experiment of magnetic fields setup by current through a conductor was
conducted Oersted. He noticed that a pivoted magnetic needle, placed below a conductor
Ohms LawThe potential difference between the ends of a conductor is
directly proportional to the current through it, provided the temperature of
the conductor is kept constant.If E is the potential ...
Operational Amplifier Basics, Circuit and applications IC-741
Phase In an AC wave theoretically
voltage and current in an AC rise and fall simultaneously. But in actual case
there is a time interval between voltage and currents. This is call phase
ReactanceReactance is the opposition
inserts by a pure coil or a capacitor to the flow of alternating current
through it. A pure coil or capacitor is one without any resistance in it. The
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